diff options
| author | Julia Lawall <julia@diku.dk> | 2010-05-27 09:36:45 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-06-01 01:24:22 -0300 |
| commit | 4202066c6995200b2755a4501ea90f5d4e163e41 (patch) | |
| tree | 4d1dfe0734e9992efae9c42a81f9c5c50cbcbfa0 /drivers/media | |
| parent | 5c331fc8c19e181bffab46e9d18e1637cdc47170 (diff) | |
| download | linux-4202066c6995200b2755a4501ea90f5d4e163e41.tar.bz2 | |
V4L/DVB: drivers/media: Eliminate a NULL pointer dereference
In each case, the print involves dereferencing a value that is NULL or is
near NULL.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@r exists@
expression E,E1;
identifier f;
statement S1,S2,S3;
@@
if ((E == NULL && ...) || ...)
{
... when != if (...) S1 else S2
when != E = E1
* E->f
... when any
return ...;
}
else S3
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/dvb/firewire/firedtv-1394.c | 2 | ||||
| -rw-r--r-- | drivers/media/video/hdpvr/hdpvr-video.c | 2 | ||||
| -rw-r--r-- | drivers/media/video/usbvision/usbvision-video.c | 3 |
3 files changed, 3 insertions, 4 deletions
diff --git a/drivers/media/dvb/firewire/firedtv-1394.c b/drivers/media/dvb/firewire/firedtv-1394.c index 26333b4f4d3e..b34ca7afb0e6 100644 --- a/drivers/media/dvb/firewire/firedtv-1394.c +++ b/drivers/media/dvb/firewire/firedtv-1394.c @@ -58,7 +58,7 @@ static void rawiso_activity_cb(struct hpsb_iso *iso) num = hpsb_iso_n_ready(iso); if (!fdtv) { - dev_err(fdtv->device, "received at unknown iso channel\n"); + pr_err("received at unknown iso channel\n"); goto out; } diff --git a/drivers/media/video/hdpvr/hdpvr-video.c b/drivers/media/video/hdpvr/hdpvr-video.c index 7cfccfd1b870..c338f3f62e77 100644 --- a/drivers/media/video/hdpvr/hdpvr-video.c +++ b/drivers/media/video/hdpvr/hdpvr-video.c @@ -366,7 +366,7 @@ static int hdpvr_open(struct file *file) dev = (struct hdpvr_device *)video_get_drvdata(video_devdata(file)); if (!dev) { - v4l2_err(&dev->v4l2_dev, "open failing with with ENODEV\n"); + pr_err("open failing with with ENODEV\n"); retval = -ENODEV; goto err; } diff --git a/drivers/media/video/usbvision/usbvision-video.c b/drivers/media/video/usbvision/usbvision-video.c index 6248a639ba2d..c2690df33438 100644 --- a/drivers/media/video/usbvision/usbvision-video.c +++ b/drivers/media/video/usbvision/usbvision-video.c @@ -1671,8 +1671,7 @@ static void __devexit usbvision_disconnect(struct usb_interface *intf) PDEBUG(DBG_PROBE, ""); if (usbvision == NULL) { - dev_err(&usbvision->dev->dev, - "%s: usb_get_intfdata() failed\n", __func__); + pr_err("%s: usb_get_intfdata() failed\n", __func__); return; } |